新理念綜合教程book4單元測試-wenkub
2022-09-02 08:06:38 本頁面
【正文】 ome Urgent action is needed to control genderbending chemicals and more resources are needed for monitoring wildlife. If wildlife populations crash, it will be too late. Unless enough males contribute to the next generation there is a real threat to animal populations in the long term. Some studies have shown that sperm counts in the West have fallen over the past 30 years. Others have shown a rise in boys born with genital deformities. Communities heavily polluted with hormonedisrupting chemicals in Russia, Canada and Italy have produced twice as many girls as boys.Passage Two in less than two centuries, by significantly reducing the variety of species on Earth, they have unraveled cons of evolution and irrevocably redirected its course.s ecosystem.D. Through hunting fish.請(qǐng)根據(jù)需要填入Script：正確答案：B得分：2分28. What determines which species survived and which died out?A. Slow chemical changes.B. Impact of human activities.C. Chance.D. Some physical event.請(qǐng)根據(jù)需要填入Script：正確答案：C得分：2分29. What will lead to biological devastation?A. Climatic or cosmic event.B. Chemical change.C. The rate of change humans are inflicting.D. Physical change.請(qǐng)根據(jù)需要填入Script：正確答案：C得分：2分30. The natural evolutionary change is different from change caused by humans in that it ____.A. is irreversibleB. affects the ecosystemC. occurs at a faster rateD. occurs at a much slower rate請(qǐng)根據(jù)需要填入Script：正確答案：D得分：2分Vocabulary and Structure請(qǐng)根據(jù)需要填入Script：Directions: Each of the following sentences is provided with four choices. Choose The destruction of our natural resources and contamination of our food supply continue occur, largely because of the extreme difficulty in affixing (把…固定) legal responsibility on those who continue to treat our environment with reckless abandon (放任). Attempts to prevent pollution by legislation, economic incentives and friendly persuasion have been net by lawsuits, personal and industrial denial and long delays—not only in accepting responsibility, but more importantly, in doing something about it. It seems that only when government dec
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